Picking motion for looms



Aug. 20, 1935.. o. v. PAYNE PICKING MOTION FOR LOOMS 3 Sheets-Sheet 1Filed Sept. 24, 1934 Qrruent or G's-car \l. pau ne Aug..20, 1935. o. v.PAYNE PICKING MOTION FOR LOOMS Filed Sept. 24, 1934 3 Sheets-Sheet 2 s e@M n u: t r W MM nV Nv m a Y a um .3 Sheets-Sheet 3 cqnoentor' Gscam V.Pan. we

O. V. PAYNE PICKING MOTION FOR LOOMS Filed Sept. 24, 1934 Aug. 20, 1935.

Qitor'nes Patented Aug. 2%,

V 2,012,053 J H r ck-mo. Morton FOB ooms spac Oscar V. Payne, Leicester,.Mass., assignor t'o Crompton t Knowles Loom Works, Worcester, Mass.,acorporation of Massachusetts 4 Applicationseptember 24, 1934, Serialsavages '20 Claims. (Cl.139--142) This invention relates topicking'motions for looms and it is the general object of the inventionto provide a silent and eflicient means to pro pel the shuttles inlooms.

stick acting through a pic It is customary to pick shuttles by means ofa ker located behind the shuttle and'moved inwardly at the time ofpicking. The stopping of the stick and also the shuttle causesconsiderable no ment of the parts involved, andit is an important iseand loss of adjustpart of my invention to provide a friction drive forthe shuttle which will eliminate *the stick and usual picker.

This result I may attain by an endlessbelt driven by-an electric motorand held against the shuttle by pressure rolls or the like. The beltisin positi on to contact with the shuttle whenever the latter is looked,and switch controls excite the motor at the time of picking.

In this way the frictional force ,is distributed over a large areasimultaneously and very little wear results on any one part ofthe-shuttle. The

motor is of the start and stop type and is practically instantaneous inits response afterthe switch is closed.

It is a further feature ofmy invention to place the shuttle as it entersthe box and move it to a position where it will derive the. full'benefitof the subsequent picking stroke of the belt, To

. accomplish this result I use a reversing switch to give the motor areverse motiontending to drag the shuttle deep into the way a maximumsurface 0 shuttle box. In this f the shuttle is incon- 7 tact with thebelt to insure proper picking.

A still further object of my invention relates to pressure means tocause the belt to-conform to the contour of the shuttle. As a specificmeans to accomplish this result I may employ a pair of rolls on afloating support positionto cause a normal deflection ofpart of the belttoward the shuttle path. In this wayand yieldingly held in the roundednose and ,shoulder'of the shuttle are in driving relation with the belt..The rolls and their supports may be associated with loom pro-gtectormechanism if desir Withthese and other objects .;in view which willappear as the description-proceeds, my invention-resides in thecombination and arrange ment of parts hereinafterv described and setforth in theclaims. Inthe accompanyingdr invention applied thereto, Fig.2 is an enlarged p I tion of arrow 2, Fig. 1',

awings, wherein a convenient embodiment of my invention. is set forth,

Fig. 1 is an end elevation of a loom having my lan view in thedirec-Figs. 3 and 4 are vertical sections on lines 3-.-3

and 4 4, respectively, Fig. 2,-

Figs. 5 and 6 are diagrammatic views of the parts indifferent positions,

Fig.7 indicates diagranunaticallytheact n of V kinaand I Fig. 8 issimilarto'Fig. '1 but' relates to shuttle placing, and

Fig. 9 is a diagram of the electric circuitfor the picking motor.

Referring particularly to Fig. 1, the loom-frame Ill supports a lay E lhavingla'y swords l2 movable;

aboutthe lay axis l3. Connectors M are between the lay and the top orcrank" shaft l5 driven by a motor M on the loom frame and having apinionl6 meshing with a gear ll onthe shaft; A top 'gear l8 meshing with abottom gear ii! on the two pick shaft 20, gear l9 being twice the sizeof'gear !8. Shipping and driving connections-may be used .to start andstop the loom, including some .well known form of clutch not shown Asshown in Fig. 2 the lay has a shuttle box B formed with a box front 2!having a smooth rear wall 22 substantially parallel to thereed R. Theusual "picker and stop for theshuttle .S are omitted, but

otherwise the matter alreadydescribed is of common construction. g Incarrying my invention into effect I secure 'a bracket 30 on thelay-sword and secure thereonamotor 3! withitsaXis vertical} The motorshaftsz may be connected'to an upright shaft fit-by a sleeve-Mfastenedto both shafts. The top of shaft 33 rotates in a bearing 35 secured tothe back ofthe lay and has keyed or othergenerally at P. y

The pressure mechanism comprises a lever 45 pivoted around studltfi onlay carried stand 4.1. A forwardly extending finger 48 on the lever haspivoted to it a floating lever 49 as at 50, and each end of the levertQcarries a grooved ro1l5l. The latter are pressed against the belt by aspring 52 on a rod 53 passing through the lever 45 and anchored to thelay. A nut 54 holds the spring compressed and, affords .means forvarying the;

pressure of the spring. By reason of the rolls the belt is urgedforwardly against the shuttle S, andv the latter in turn is held againstthe box front 2 I Since the belt is in shuttle engaging position at alltimes, the motor for it must be at rest part of the time'and in motionat other times. Furthermore, the motor is reversed to place the shut tleand run: forwardly to pick. The control for these various operations areeffected as shown herein by a cam moving in timed relation with thebottom shaft 20.

As shown in Figs. 1, 5 and 6 a cam 60 is securedf to shaft 20 and has alow shuttle placing motor reversing dwell 6!, a high shuttle pickingdwell 62 to drive the motor forwardly, and an inter-,

, mediate short stop dwell 63 lying between the other two dwells. Thereis-also a long intermediate stop dwell 64 corresponding to the time theshuttle is on the other side of the loom. A

,cam lever 65 pivotedat 66 to a fixed stand 6! has a' roll 58 heldagainst the cam by a spring 'A motor switch ID has an arm H on a'switchshaft 12 andconnecte'd by a' link 13 to the lever 65. The cam turnsconstantly in the direction of arrow at, Figs. 1, 5 and 6, and moves thelever '65 and therefor'e'the switch arm and shaft to three difierentpositions. jWhen the shuttle approaching the shuttle box long dwell 64is holding the switch inneutral or stopping position and the pickingmotor is V at rest; Theflight of theshuttle is sotimed .With the' loomparts that as the roll reaches the end of the long dwell 64 the shuttlewill be just entering the shuttle box, assuming some such position asshown in full lines, Fig. 8. As the the shuttle is ordinarily at restso-far as move-,

ment lengthwise of the shuttle is concerned and to meet this conditionthe short intermediate dwell 63 arrives under the roll, moving switcharm H back to upright neutral position, see full lines 7 Fig. 5. J

As the lay approachesthe middle position on its backward stroke, thenormal times for picking,

high dwell 62 comes under rollEB and throws the switch arm H to theright or dottedline position of Fig. 5. This closes the circuit on themotor 3 l to drive it "in a forward'direction, moving the shuttle fromthe full line top center position of Fig. 7 to the dotted position andalong the lay to the oppositeside. H During both the boxing and pickingof the shuttle the rolls will assumethe position indicated in'full linesin Fig; 8, causingthe beltgtoconform to the rounded end of the shuttle.When the belt moves to place' or pick the shuttle the latter slidesalong thebox front 2| which is smooth enough to offer a minimum ofresistance to shuttle motion. l

The electrical connections for the motor, which may be of the threephase alternating current induction type, are shown in Fig. 9. The'powerWires-85, '86 and 81 are connected to posts 88, 89

and 90, respectively, of switch 18, and post/s9 I, 92

and 93 of the switch are connected by wires 94 and 95, and 96,respectively,.to the windings 91, 98 and 99, respectively, of the motor.Crossovers I00 and ml permit reversal of the connections between wiresand 86, and the posts 9! and 92, while wire 81 is arranged to connectstraight through to .wire 96 when the switch is thrown either direct orreverse.

The relation of the switch to the motor control will be apparent, it isbelieved, from'the drawings. When the arm ll is to the right, as dottedin Fig.

" 5,'current flows throughwires 85, 86 and 8? to wires 94, and 96,respectively, with results already described. Whenthe switch isreversed, however; wires 85; 86' and 81 are connected to wires 95', 94and 96, respectively, a condition existing when the arm TI is intheposition shown dotted in Fig. 6. When the arm H is in neutral ormid-position the switch is open and the power wires are disconnectedfrom themotor. While .a specific type of motor has been shown, yetI donot wish to beli'rnited to such a motor, nor the type of reversingswitch shown.

From the foregoing, it will be seen thatI have provideda loom whereinthe shuttle is picked by a silent friction element normally placed toengage] the shuttle and actuated at the proper time topropel theshuttle. In this way a contact of large area is provided and the"shuttle can start to move, with its actuator instead of being struck byamoving part haV-inga high rate of speed; The shuttle is thereforesubjected to a force acting uniformly along its length and there is notendency for the-actuator to wear grooves or depressions in the shuttlewall. It will also be seen that the pickingmotor is reversibleto placethe shuttle preparatory to picking. Furthermore, the belt engages alarge area of the shuttle and'has a portion thereof deformable to followthe outline of the shuttle to insure maximunrsurface contact both forthe placing and picking operations.

Having thus describedmyinvention it will be seen that changes andmodifications may be made therein by those skilled in. the art withoutdepartingjfrom the spiritand'scope of the invention and I do not wishto. be limited to the details herein disclosed, but what I claim is:

' 1''. In a loom having al'ay, a shuttle box on the lay, a shuttleactuator extending along the lay .and forming part of the shuttleboxand' positioned at all times to engage the shuttle frictionally whenthe latter is in'the box, an electric motor operatively connected to theactuator and idle during a part of the cycle of loom operations,

andmeans to excite the motor to cause the actuator to pick the shuttleout of the box by frictional 'forcewhen the picking point is reached inthe cycle of the'lo-o'm.

-2. In a loom having a lay, a shuttle box carried by the layj'a beltmovable along the lay and forming one side f ofthe shuttle box andpositioned at all'times to engage frictionally ashuttle in the box, anelectric mot'or operatively connected to the'beltand idle during a partof the cycle of loom 'operations', anda controller for the motoroperating in timed'relation with the loom to excite 'the'motor and causethe belt to move in a direction to pick the shuttle out of the box by africtionalforce when the loom reaches the picking point in its cycle ofoperations.

3. In a'loom having a lay, a shuttle box thereon, a shuttle actuatorlocated on one sideof the box positionedaatall .times for frictionalengage- .ment with a shuttle entering or leavingthe box,

llo

drive mean sfor the actuator at rest'during a part ofthe cycle of loomoperations, and means operative when the loom reaches the picking pointin its cycle-of operations to set'the drive means in motionto givethe-actuator a movement to pick the shuttle out of the box by a forcetransmitted frictionally. I

I 4. In a 100m having a lay, a-shuttlebox onthe lay, a belt to engage ashuttle frictionally extending" along and forming one side ofthef'shuttle box, apair of spaced pulleys around which the belt istrained, an electric motor operatively connected to one of the pulleysand idle during a part of thecycle of loom operations, and control meanseffective when the' loom reaches the picking'point" in its cycle ofoperations to set the motor in motion to give said belt a movement in adirection'to pick the shuttle out of the box by a force transmittedfrictionally'.

In a loom having a lay, a'shuttle box on the lay, a belt forming part ofand extending along the shuttle box and positioned at all times toengagefrictionally a shuttle enteringor leaving the shuttle box, a 'pairof spaced pulleysrotatably mounted onthe lay'and around which the beltis trained, an electric motor operativelyrelated to one of thepulleysand idle during a part of the cycle of 100111 operations, a controlswitch for the motor, andmeans operativefwhen the loom reaches thepicking point in its cycle of op- 'erations to move the switch in adirection to cause the motor'to move the belt in a direction to picktheshuttle out of the shuttle box.

6. In a loom having a lay, a shuttle box, a belt forming part of theshuttle box at rest during a part of the cycle .of loom operations andpositioned at all times to engage frictionally a shuttle entering orleaving the box, and means operative when the loom, reaches the pickingpoint in its cycle of operations to set said belt into motion and'movethe same in a direction to pick the shuttle out of the shuttle box byfrictional contacttherewith. v V '3 In a, loom operating with ashutt1e,1a Shut-'3 tle box to receive a shuttle, a belt extending alongand forming part of the shuttle box and posi 'tioned atv all times toengage frictionally a shuttle when the'l'atter is in the shuttle box,and intermittently actuated means operatively connected to the belt togive the latter periodic movements in a direction along the shuttle boxand in frictional contact with the shuttle to pick the latter out of thebox.

8. In a loom operating with a shuttle having a rounded nose, a shuttlebox to receive a shuttle, a belt extending along and formingpart of theshuttle box and positioned at all times tov engage frictionally ashuttle in the shuttle box, intermittently actuated means operativelyconnected to the belt to give'the latter, periodic movements in adirection along the shuttle box and in frictional contact with theshuttle to pick the latter out of the box, and means pressed against thebelt to cause the same to conform to'an'd liein frictional contact withthe rounded nose of the shuttle.

-9. In a loom having a: shuttle box, a belt extending along and formingpart of'the shuttle box and positioned at alltimes for engagement witha'shu ttle in the shuttle box, a pair of spaced rolls to engage thebelt, at spaced points and move the same inwardly with respect to theshuttle box towards'a shuttle in the box, and a. floating yieldingmounting for saidrolls causing the latter trio motor mounted on torequire the belt to conform to the outline of the shuttle in the box. I

10. In-a 100m having a shuttle box, a belt extending along and formingpart of the shuttle box and positioned at all times to have frictionalengagement with a shuttle in the shuttlebox, means to move the beltperiodically and while in frictional' contact with the shuttle to pickthe latter out of the box, and means to cause the belt to conform to theshape of the shuttlefas the latter moves along the shuttle box.

' llaln a loom having a shuttle box, a belt excycle of operations and tocause? said motor to move the belt topick the'shuttle-out of the boxwhen the loom reachesjthe' picking point in its cycle of operations,

"12. In a loom having a' lay movable about an axis, a shuttle box on thelay, a shuttle actuator forming one side of the shuttle box and po-sietioncd at all "times to engage :frictionallya shuttle in the box, anelectric motor mounted on and movable about the axisofthe lay an'doperatively connected to'the actuator and idle during apart of the cycleof loom operations, and means operative when the loom'reaches thepicking point in its cycle of operations to set said motor in operationto give the actuator a movement in a direction to pick the shuttle outof the box by frictional contact therewith;

13; Ina loom having a' lay movable about an axis, a shuttle box thereon,a belt mounted on the lay and forming part of the shuttle box,an'electhe layered operatively connected to the belt, said motor andbelt being 'atr est during a part of the, cycle of loom opera- 7 tionsand the'belt positioned at all times for engagement for frictionalengagement with a shuttle" in the box, areversingsw'itch for the motorto cause the same to move in opposite directions, and a controller forthe motor operating in timed relation with the loom and operative toreverse the motor to cause the belt'to move a shuttle int-o the box byfrictional contact therewith when the lay reaches the shuttleboxingpoint in its cycle of operations to place the shuttle for propersubsequent picking and thereafter operative to move the motor and beltto pick the shuttle out, of the box by frictional contact between theshuttle and belt when the lay reaches the picking point in its cycle ofoperations.

14. In a loom having a shuttle box, a friction belt extending along andforming part of the shuttle box and at rest during a part offthe oycleof loom operations and positionedto engage a shuttle in the box, andmeans first togive said belt a reverse movement to draw a shuttle intothe box by frictional contact with the shuttle to establish maximumcontact of area between 1 the belt and the shuttle, and operativethereafter 1 to'give the belt a-direct motion in a direction to drivethe shuttle out of the box by frictional contact therewith.

15. In a loom having a lay movable about an axis, a motor normally atrest mounted on and movable about the axis of the lay, ashuttle movingelementoperatively connected to the motor and positioned at all times tohave frictional contact with a boxed shuttle, a reversing switch for themotor, a cam having high, low and inter-- mediate dwells, meanstooperatively connect the switch and cam to hold the switch open by theintermediatedwell, close the switch in one condition by the low dwelland close the switch in a different condition by the high dwell, the

switch when in one condition causing the motor to move the belt in adirection to box the shuttle and when in the other condition causingthemotor to move the belt in a direction to pick the shuttle out of thebox. 7 a

16. In a loom having a lay movable about an axis and having a shuttlebox-on the lay, a beltextendin along and forming part of the shuttle boxand positioned at all times for frictional en'- gagement with a shuttlein the box, a motor operatively connected to the belt and idle during apart of the cycle of loom operations, a'reversible switch for the motor,a cam to'control the switch having high and low dwellsspaced by anintermediate dwell, means to operatively conmeet the cam and the switchso that the low dwell will cause. one closed. condition for the causethe motor to drive the belt in the opposite direction to pick theshuttle out of-the box by frictional contact therewith.

17. In a loom having alay and a shuttle box thereon, a shuttle actuatorlying on one side ofthe shuttle box and at rest during apart of thecycle of loom operations and positioned to em gage a shuttle in theshuttle box at allltimes, andmeans to set said belt in motion to pickthe shuttle out of the box by a force transmitted frictionally from thebelt'to the shuttle.

18. In a loom having'a lay and operating with a shuttle, a shuttle boxon the lay, an elongated friction element extending along the layadjacent the shuttle box andlocated to have contact with a shuttle inthe box at points lying along the lay and on both sides of thelongitudinal center of the shuttle, and means to move the element alongthe lay to pick the shuttle out of the box by a force transmittedfrictionally from the element to the shuttle,-that. part of the elementhaving contact with the rear part of the shuttle having reference to thedirection in which the shuttle ispicked resisting movement of theshuttle transversely of the direction of picking. V

19. a picking motion for a loom having a lay and operating with ashuttle, a shuttle-box on the lay, a pair of spaced rotatable actuatorslocated at different points-longitudinally along the lay and adjacentthe shuttle box, a friction belt engaging and movable by the actuatorsand positioned to have contact with a shuttle in the box at points whichlie on both sides of the longitudinal center of the shuttle when theshuttle is at restin the box, and means to move the actuators to pick.the shuttle out of the box by a force transmitted frictionally'byth'e'belt tothe shuttle, that part of the belt having contact with V therear part of the shuttle having reference to the direction in which theshuttle is picked resisting movement of the shuttle transversely of thedirectionof picking. j'

20. In a picking motion'for 'a loom operating with a lay and a shuttle,a shuttle box on one end of: the lay, a belt extending along the layadjacent the shuttle box and positioned for frictionalcontact with ashuttle in the box, said belt having contact with the shuttle alongportions of the latter which are behind and in front of the longitudinalcenter of the shuttle having respect to the direction of travel of theshuttle, and means operative to'inove the belt and cause the latter to,pick the shuttle out of theshuttle box by a force transmittedfrictionally from the belt to the shuttle, that part of the belt havingcontact with the rear part of the shuttle having reference to thedirection in which the shuttle is picked resistin-gmovement of theshuttle transversely of the .direction of picking.

OSCAR V. PAYNE.

